Metallization device and method

Abstract

The present invention concerns a mmetallization device ( 1 ) for a substrate ( 2 ) by metallic material ( 3 ), comprising means ( 5 ) for generating heat suitable to melt said metallic material ( 3 ); means ( 4 ) for guiding said metallic material ( 3 ) suitable to bring said material in correspondence of said heat generating means ( 5 ); and means generating compressed air suitable to generate a compressed air jet (A) on said melt metallic material by said heat generation means ( 5 ), in order to nebulise the same so as to obtain a jet exiting from an outlet nozzle ( 6 ) and cooling nebulised particles of said metallic material ( 3 ), said jet exiting from said outlet nozzle ( 6 ) being directed on said substrate ( 2 ) so as to metalize it and said cooling being such to bring said particles from a melting state to a plastic state and at a temperature lower that the pyrolysis or decomposition temperature of said substrate ( 2 ). The present invention also concerns a metallization method.

1 . Metallization device ( 1 ) for a substrate ( 2 ) by metallic material ( 3 ), comprising:
 Means ( 5 ) for generating heat suitable to melt said metallic material ( 3 );   means ( 4 ) for guiding said metallic material ( 3 ) suitable to bring said material in correspondence of said heat generating means ( 5 ); and   means generating compressed air suitable to generate a compressed air jet (A) on said melt metallic material by said heat generation means ( 5 ), in order to nebulise the same so as to obtain a jet exiting from an outlet nozzle ( 6 ) and cooling nebulised particles of said metallic material ( 3 ), said jet exiting from said outlet nozzle ( 6 ) being directed on said substrate ( 2 ) so as to metalize it and said cooling being such to bring said particles from a melting state to a plastic state and at a temperature lower that the pyrolysis or decomposition temperature of said substrate ( 2 ).   
   
   
       2 . Device ( 1 ) according to  claim 1 , characterized in that said heat generation means ( 5 ) is of the electric arc kind. 
   
   
       3 . Device ( 1 ) according to  claim 1 , characterized in that said heat generation means ( 5 ) are of the oxyacetilenic combustion kind. 
   
   
       4 . Device ( 1 ) according to  claim 1 , characterized in that it comprises cooling means placed in correspondence of said outlet nozzle ( 6 ) cooling said exiting jet. 
   
   
       5 . Device ( 1 ) according to  claim 4 , characterized in that said cooling means comprise a serpentine heat exchanger with refrigerating fluid placed in correspondence of the outlet nozzle ( 6 ). 
   
   
       6 . Device ( 1 ) according to  claim 1 , characterized in that it comprises heat-adjustment means for adjusting temperature of said outlet jet. 
   
   
       7 . Device ( 1 ) according to  claim 1 , characterized in that said metallic material is a metallic wire ( 3 ). 
   
   
       8 . Device ( 1 ) according to  claim 1 , characterized in that said metallic material is dust. 
   
   
       9 . Method for metallization of a substrate ( 2 ) comprising the following steps:
 heating said metallic material ( 3 ) bringing it at the fusion temperature;   providing a compressed air jet on said melt metallic material ( 3 ) so as to nebulize the same material obtaining an outletting jet and cooling the same, said cooling being such to bring said particles from a melt state to a plastic state and at a temperature lower than the pyrolysis or decomposition temperature of said substrate ( 2 ); and   directing said outlet jet on said substrate ( 2 ) to be metalized.   
   
   
       10 . Method according to  claim 9 , characterized in that it comprises the further steps:
 further cooling said outlet jet; and   heat-adjusting said outlet jet.